Loewen Windows and Doors recently added the National Fenestration Rating Council (NFRC) data for their Vero Custom and VeroSteel product lines to their website. The new pages are under the Professionals section and can be viewed here and here. Vero Custom is Loewen Tucson’s product line of hand-crafted wood windows and doors, while the VeroSteel product line are the steel windows and doors that can be used in a wide variety of architectural styles, from Modern and Contemporary to Classic or Mediterranean.
All major standards and programs for window energy efficiency base their criteria on certified ratings by the NFRC. Window units that bear NFRC labels give ratings for U-factor, Solar Heat Gain Coefficient (SHGC), Visible Light Transmittance (VT), and optionally Air Leakage (AL) and Condensation Resistance (CR) ratings.